Question

(7a² - 3ab + 2b²) - (3a² - 5ab - c² - 3b²) + (-6ab + c²)

Answer 1

Resposta:

(7a²-3ab+2b²)-(3a²-5ab-c²-3b²)+(ab+c²)=

7a²- 3ab +2b²-3a² -5ab +c²+3b² +6ab-c²=

7a² -3a² -3ab +5ab +6ab +2b² +3b² +c² -c²=

4a² +8ab +5b²

Espero ter ajudado